
.middle > div {
    border: 1px solid red;
}

.middle > div > div:nth-child(2) {
    padding: 10px;
}

.middle > div > div:nth-child(2) > div:nth-child(1) {
    text-align: center;
}

.middle > div > div:nth-child(2) > div:nth-child(2) {
    display: flex;
    justify-content: center;
}

.middle > div > div:nth-child(2) > div:nth-child(2) > div {
    width: 700px;
    /*border: 1px solid red;*/
    margin: 50px 0;
}

.middle > div > div:nth-child(2) > div:nth-child(2) > div > div > div:nth-child(1) {
    line-height: 50px;
}

.middle > div > div:nth-child(2) > div:nth-child(2) > div > div > div:nth-child(2) {
    border: 1px dashed red;
    /*height: 50px;*/
    padding: 0 20px;
    line-height: 50px;
    background-color: rgb(238, 238, 238);
}

.middle > div > div:nth-child(2) > div:nth-child(2) > div > div:nth-child(3) > div:nth-child(2) {
    height: 100px;
    line-height: 20px;
    padding: 0 20px;

}

/*提交*/
/*.middle > div > div:nth-child(2) > div:nth-child(2) > div > div > div:nth-child(2)*/
.middle > div > div:nth-child(2) > div:nth-child(2) > div > div:last-child {
    margin: 20px auto;
    background-color: #E69039;
    color: white;
    width: 100px;
    text-align: center;
    padding: 5px;
    cursor: pointer;
    border-radius: 45px;
    box-shadow: 1px 1px 1px 1px red;

}